Nursing bottle cap



FIG. 1 is a top front perspective view of a nursing bottle cap showing my new design;

FIG. 2 is a front elevational view thereof, the rear elevational view being a mirror image;

FIG. 3 is a right side elevational view thereof, the left side being a mirror image;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and

FIG. 6 is a front elevational view thereof, showing the nursing bottle cap in position, the broken line showing of the nursing bottle is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a nursing bottle cap, as shown and described. 